实现微信公众号聊天机器人，自动回复——nodejs+图灵机器人

登录微信测试号：https://mp.weixin.qq.com/debug/cgi-bin/sandboxinfo?action=showinfo&t=sandbox/index
设置开发接口：



填写url地址和token，url是在微信公众号发送消息的时候调用的接口地址
步骤：
1、注册图灵机器人获取apiKey,官网：http://www.tuling123.com/
2、使用nodejs框架express开发服务器端接口
1）安装nodejs
2）安装express脚手架npm install -g express-generator@43）初始化项目express myRobot4）安装依赖cd myRobot && npm install5）添加相关其他支持包 npm install body-parser cookie-parser debug express jade morgan querystring serve-favicon sha1 xml2js --save6）修改入口文件（app.js)var express = require('express');
var app = express();
var http = require('http');
var sha1 = require('sha1');
var xml2js = require('xml2js');
var querystring = require('querystring');

process.env.PORT = '3001';
function checkSignature(req) {
// 获取校验参数
var signature = req.query.signature;
var timestamp = req.query.timestamp;
var nonce = req.query.nonce;

// 此处为实验分配了一个 token，也可以修改为自己的 token
var token = 'FUWMsvAy';

// 按照字典排序
var params = [token, timestamp, nonce];
params.sort();

// 连接
var str = sha1(params.join(""));

// 返回签名是否一致
return str == signature;
}

// 接入验证
app.get('/', function(req, res) {
// 签名成功
if (checkSignature(req)) {
res.send(200, req.query.echostr);
} else {
res.send(200, 'fail');
}
});

function handler(req, res) {
let buf = '';
// 获取XML内容
req.setEncoding('utf8');
req.on('data', function(chunk) {
buf += chunk;
});
// 内容接收完毕
req.on('end', function() {
xml2js.parseString(buf, function(err, json) {
if (err) {
err.status = 400;
} else {
req.body = json;
}
});

let data = req.body.xml;
var msg = {
"toUserName" : data.FromUserName[0],
"fromUserName" : data.ToUserName[0],
"createTime" : data.CreateTime[0],
"msgType" : data.MsgType[0],
"content" : data.Content[0],
"msgId" : data.MsgId[0]
};
request(msg, req, res)

});
}

function request(data, req, res) {
var msg = {
"key":'64603a10addd410c871c002c3d4f23d6', // 可以填入自己申请的机器人的apiKey
"info": data.content,
"userid": ~~(Math.random() * 99999)
};
var text = querystring.stringify(msg);
var options = {
hostname: 'www.tuling123.com',
path: '/openapi/api',
method: 'POST',
headers: {
'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8'
}
};

var requestObj = http.request(options, function (response) {
var result = '';
response.setEncoding('utf8');
response.on('data', function (chunk) {
result += chunk;
});
response.on('end',function() {
try{
var obj = JSON.parse(result);
}
catch(e){
data.content = e.message;
echo(data, res);
return;
}
data.content = obj.text;
echo(data, res);
})
});

requestObj.on('error', function (e) {
console.log('problem with request: ' + e.message);
data.content = e.message;
echo(data, res);
});
requestObj.write(text);
requestObj.end();
}
function echo(data, res) {
var time = Math.round(new Date().getTime() / 1000);
var output = "" +
"<xml>" +
"<ToUserName><![CDATA[" + data.toUserName + "]]></ToUserName>" +
"<FromUserName><![CDATA[" + data.fromUserName + "]]></FromUserName>" +
"<CreateTime>" + time + "</CreateTime>" +
"<MsgType><![CDATA[" + data.msgType + "]]></MsgType>" +
"<Content><![CDATA[" + data.content + "]]></Content>" +
"</xml>";

res.type('xml');
res.send(output);
}
// Start
app.post('/', function(req, res) {
handler(req, res);
});

module.exports = app;启动服务node ./bin/www关注这个微信测试号——》点击输入框——》输入“ 深圳天气 ”